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cmake: Add UF2 as an additional build output option.

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Add ability to build a UF2 (https://github.com/Microsoft/uf2)
image as an additional output type. This leverages the code
partition offset for the UF2 base address, and a configurable
UF2 family ID.

Includes an unmodified (except for headers for licensing, pylit
disabling) version of the uf2conv.py script copied the UF2
format specification repository, used to convert the bin to UF2.

Origin: UF2 file format specification reference utilies
License: MIT
URL: https://github.com/microsoft/uf2/blob/master/utils/uf2conv.py
commit: 587abb8b909266e9b468d6284f2fbd425235d1b5
Signed-off-by: Pete Johanson <peter@peterjohanson.com>
This commit is contained in:
Pete Johanson 2020-12-31 16:51:52 -05:00 • committed by Carles Cufí
commit 310a464acf
5 changed files with 358 additions and 0 deletions
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18
Kconfig.zephyr
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@ -377,6 +377,24 @@ config BUILD_OUTPUT_S19
Build an S19 binary zephyr/zephyr.s19 in the build directory.
The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
config BUILD_OUTPUT_UF2
bool "Build a binary in UF2 format"
depends on BUILD_OUTPUT_BIN
help
Build a UF2 binary zephyr/zephyr.uf2 in the build directory.
The name of this file can be customized with CONFIG_KERNEL_BIN_NAME.
if BUILD_OUTPUT_UF2
config BUILD_OUTPUT_UF2_FAMILY_ID
string "UF2 Device Family"
help
UF2 bootloaders only accept UF2 files with a matching family ID.
This can be either a hex, e.g. 0x68ed2b88, or well-known family
name string.
endif # BUILD_OUTPUT_UF2
config BUILD_OUTPUT_STRIPPED
bool "Build a stripped binary"
help